Friction brake



Nov. 3, 1931. H. N. SMITH 1,830,341

FRICTION BRAKE Filed Oct. 24. 1928 the back toprevent the body from phcations. And a fiurther object is to provide a brake" y the ack. The ends of the'body may be to back whic block on its support for service.

A the reticulated anchoring plate shown in Fig. 4.

Patented N t. 3,1931

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mm or nvrnorr, moment, assroxoaro Amman 1mm uA-rmum oonrounor, or NEW YORK, it. an, a coarons'rron or mrw YOBI FRICTION BRAKE Application filed October 24, 1928. ierlel 80. 814,596.

made of wire mesh or other reticulated ma SQThis invention relates to friction brakes,

and more particularly to friction blocks hav- .ing a composition body and a metal back for 1.1- use on shoes or heads of internal brakes or tron bands of external brakes, and otherwise m brake assemblies of different kinds.

The object of the invention is J to tlprovidc a strong and substantial back for e comp'osition'body, especially for a large block intended for heavy dut work, to stand rough handling and the con 'tions of service.

Another object is to provide for a rigid and secure anchorage between the bod and separated from the back under brakingapblock having a composition body securel anchored ulpon a strong and substantial metal is also used for mounting the In the accompanying I have shown the invention ina selected embodi ment and refer thereto;

Fig. 1 is a face view ofth block-with the boily partly removed. g

. 1g. 2 is a longitudinal sectional view on line 2-2 of Fig. 1. 1

Fig. 3 is a transverse sectional view on a line 3--3 ofFig.-1."

.Fig. 4 is a loriiti1dinal=.,sectional-view on the 111164-5401 g. 6.

" Fig. 6 is a longitudinal sectional view of member, and

. Fig. 6 is a plan view of a part of the back The body 7 is made of suitable com tion which will produce desired brafir i g effect and also have long-wearing quality. The back plate 8 is made of sheet metal of required gauge, size and shape, and it has a plurality of openings 9, and a lurality of rejecting tongues 10 stamped ii-omthe bac plate and leaving'elongated openings 5 or slots 11. An anchoring member 12 1s which pass through interstlces of the anchormg member and are bent down thereon (Fig.

. 1 The body is molded or otherwise app ed on the inner side of the back plate and the anchoring member thereon. The body materialfills the interstices of the an choring member and the openings in the back plate and is rigidly and securely anchored to the back plate to withstand the conditions of serv ce which tend to shear the body from the back. For heavy duty blocks the invention is especially desirable, and it is also advantageous in lighter blocks, especiall to prevent separation of the body from recessed at 13 and the ends of the anchoring member may be recessed at 14 to accommodate the devices which are employed for fastening the block to a shoe or head or band or other support, the recesses permitting direct engagement of said devices with the back; but the block may be otherwise made to accommodate fastening devices as may be required or be found desirable, and other changes in the form, construction and arrangement of parts may be made within the see of the-following claims. l zlaim-z 1. A brake block comprising a back plate, a

reticulated anchoring member on the inner side of the back plate, tongues stamped out i of the back plate 1n the direction of its length and oppositely engaged in the direction of their ength with the anchoring member by being bent over the interstices thereof and 4 2- I macs a reticulated anchoring member on the inner side of the beck p ate, tongues stamped out of the back plate and engleged with the anchori member to prevent ative movement of ie back plate and anchoring member lengthwise thereof in either direction, and a. composition body mounted on the back late and embedding the anchoring memr,' said body and anchoring member being 10 recessed at their ends and between their side edges to accommodate devices for engaging the back plate in said. to fasten the block to a support.

HARRY N. SMITH. 

